Choosing the right name for your business is one of the most important decisions you’ll make as a founder. Before you commit to anything, though, you need to know whether that name is already taken.
The good news is that checking company name availability in the UK is straightforward, free, and takes only a few minutes. The process is handled primarily through Companies House, the UK’s official registrar of companies, and understanding how it works can save you a great deal of frustration further down the line.
Can I Check If a Company Name Is Available?
Yes, absolutely. Anyone can check company name availability at any time, whether you’re in the early stages of brainstorming or days away from registering your business. Companies House provides a free name availability search tool on its website, and it requires no account or login to use.
It’s worth understanding what the search actually tells you, though. The tool checks whether a name is identical or too similar to one already registered at Companies House, but it doesn’t automatically confirm that you’re free to use that name commercially. Trade mark conflicts, for example, are a separate matter entirely and require additional research.
Key Tools for Checking Company Name Availability in the UK
| Tool | Provider | What It Checks | Cost |
|---|---|---|---|
| Company Name Availability Search | Companies House | Registered company names | Free |
| UK Trade Mark Search | Intellectual Property Office | Registered trade marks | Free |
| WebCheck / Find and Update | Companies House | Existing company records | Free |
| Business Name Register | HMRC (sole traders) | Self-employed trading names | N/A |
| Domain Name Search | Various registrars | Website domain availability | Varies |
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How to Check If a Company Name Is Still Available
The most reliable starting point is the Companies House name availability checker, found at gov.uk. Simply type in your proposed name and the system will return a result indicating whether the name is available, similar to an existing name, or already registered.
There are some important nuances to be aware of here. Companies House applies “sensitive words” rules, meaning certain words (such as “Royal,” “Bank,” or “Institute”) require additional approval before they can be included in a registered company name. If your chosen name contains any of these terms, the registration process will involve extra steps beyond a basic availability check.
Where Can I Check If a Business Name Is Available?
Companies House is the primary place to start, but a thorough check involves several sources. After confirming the name isn’t already registered, it’s sensible to search the UK Intellectual Property Office trade mark database to ensure you won’t be infringing on an existing registered trade mark. A trade mark conflict can result in legal challenges even if Companies House has approved your registration.
You should also check whether a suitable domain name is available for your business. A company name that exists as a clean, available .co.uk or .com domain is far easier to build a brand around. Many entrepreneurs run all three checks in parallel, covering Companies House, the IPO database, and a domain registrar, before settling on a final choice.
Common Reasons a Company Name May Be Rejected by Companies House
| Reason | Example | What to Do |
|---|---|---|
| Identical to existing name | “Pinnacle Solutions Ltd” already registered | Choose a clearly distinct name |
| Too similar to existing name | “Pinacle Solutions Ltd” (misspelling) | Differentiate further |
| Contains sensitive words | “Royal Oak Consulting Ltd” | Apply for permission from relevant body |
| Offensive or inappropriate | Names containing offensive language | Reword entirely |
| Implies government connection | “UK Government Advisory Ltd” | Remove misleading terms |
| Regulated terminology | “Smith & Partners Solicitors Ltd” | Ensure professional body approval |
How to Check If a Business Already Has a Name
If you want to look up whether a specific business name is already in use, the Companies House Find and Update Company Information service lets you search the full register of active and dissolved companies. This is particularly useful if you’ve encountered a trading name in the market and want to understand the legal entity behind it.
It’s also worth remembering that sole traders and partnerships are not required to register with Companies House. A business operating under a trading name without a limited company structure will not appear in the Companies House register, which means a clear result from Companies House doesn’t necessarily mean that trading name is unused in your sector. Checking industry directories, Google, and social media platforms adds another layer of due diligence that many new business owners overlook.
Understanding the Limits of a Company Name Availability Check
Passing a Companies House name check is not the same as owning the rights to a name. Many business owners make the mistake of assuming that successful registration gives them full legal protection, when in reality it simply means the name met the registrar’s criteria at the point of registration.
Trade marks offer a stronger form of protection and are registered separately through the UK Intellectual Property Office. You can find detailed guidance on both company name registration and trade marks through GOV.UK’s business name guidance, which sets out the full rules that apply to limited companies incorporated in England, Wales, Scotland, and Northern Ireland.
How Do I Look Up Company Name Availability and Secure It for My Business?
Once you’ve confirmed that your desired name is available, the next step is to register it before someone else does. Company name availability is not reserved by the search itself; only formal registration through Companies House secures your right to use that name as a limited company. For most straightforward registrations, this can be completed online in a matter of hours.
Before you finalise your choice, it’s also worth thinking about the long-term brand implications of the name. A name that is too descriptive of a single product or service can become limiting as your business grows, while a name that is too abstract may be harder for customers to remember or associate with what you do. Many of the most successful UK businesses, from those operating out of London’s financial district to thriving independents across the regions, built their identities around names that were both distinctive and flexible enough to grow with them.
Protecting that name fully requires action beyond registration. Filing a trade mark application with the UK Intellectual Property Office gives you legal recourse against others who attempt to use your name commercially, and it signals to the market that your brand is established and protected. It’s a step that many founders delay, but completing it early is one of the most cost-effective ways to safeguard everything you’re building.
How Do I Look Up to See If a Company Name Is Available: Frequently Asked Questions
Yes, the Companies House name availability checker is completely free and accessible to anyone without needing to create an account. You can run as many searches as you need before deciding on a name.
Most online applications submitted through Companies House are processed within 24 hours, and many are approved on the same working day. Postal applications take considerably longer, typically between eight and ten working days.
No, registering a company name at Companies House and registering a trade mark are two entirely separate processes. Trade mark protection is granted by the UK Intellectual Property Office and provides a broader legal right to exclusive use of your name in commerce.
Companies House will not register a name that is identical or too similar to an existing registered company name. However, sole traders and unincorporated businesses are not subject to the same restrictions and can operate under a similar trading name without Companies House oversight.
Using a name that infringes on an existing registered trade mark could result in legal action from the trade mark holder, even if Companies House approved your company registration. It’s essential to check the IPO database before committing to any name.
Companies House does not offer a formal name reservation service for standard registrations. The only way to secure a name is to complete the registration process in full.
Yes, Companies House maintains a list of sensitive and restricted words that require specific approval before they can be included in a company name. Words suggesting a connection to government, royalty, or regulated professions fall into this category. You can find the full list via GOV.UK’s company naming guidance.
A company name is the legal name registered at Companies House, while a trading name (also called a business name) is what a company may use to operate commercially if it differs from the registered name. Trading names do not need to be registered but must not be misleading or infringe existing trade marks. For more background, the Wikipedia article on trade names provides a useful overview of how trading names work across different contexts.
Yes, a limited company can change its name by passing a special resolution and paying the relevant fee to Companies House. The change takes effect once Companies House issues a new certificate of incorporation.
While not a legal requirement, checking whether your chosen name is available across key social media platforms is strongly advisable. A consistent brand presence across LinkedIn, Instagram, and X (formerly Twitter) is far easier to build if your company name is available on all relevant channels.
Companies House uses specific rules to determine similarity, including ignoring certain words like “the,” “and,” and “limited,” and treating certain characters as equivalent. A name that looks different to you may still be flagged as too similar under these rules.
Not exactly. A Companies House search covers limited companies incorporated in the UK, but it does not capture all trading names used by sole traders or partnerships. A comprehensive business name check involves Companies House, the IPO, and independent market research.
Generally, yes. Once a company has been dissolved and removed from the register, its name may become available for a new applicant to register. However, Companies House retains records of dissolved companies and the name similarity rules still apply.
You can check domain name availability through any accredited domain registrar, such as Nominet (the official registry for .co.uk domains) or popular providers like 123-reg and GoDaddy. Running this check alongside your Companies House and IPO searches gives you the most complete picture of whether your chosen name is genuinely available.